2.1 A matter of the heart

• Biologie
• Middelbare school
• vwo
• Leerjaar 2

Which parts of the heart do you already know?

Heart beat in 3 stages

Atriums contract

Ventricles contract

Pause

The heart pumps oxygen rich blood into the?

1. Superior vena cava
2. Pulmonary arteries
3. Aorta
4. Aorta and pulmonary arteries

Thanks to the valves, the blood doesn't flow back into the...

1. Ventricles
2. Atriums

The heart receives oxygen rich blood from the ...

1. Pulmonary veins
2. Pulmonary arteries
3. Coronary arteries/veins
4. Aorta

The right order in heartbeat is

1. Ventricles - atriums - pause
2. Atriums-Ventricles - pause
3. Pause - atriums - ventricles
4. Pause - ventricles- atriums

1. 9 = valve
2. 9 = aortic valve
3. 9 = pulmonary valve
4. All answers are wrong

Sinus cells - nerve cells that initiate the heart beat

assignment

do excercise 11 in pairs

done? check your homework